Storage-battery grid.



No. 794.501. PATENTED JULY 11, 1905.

M. HEISSER.

STORAGE BATTERY GRID.

Agrmonron FILED JULY 5.1904.

Patented July 11, 1905.

PATENT OFFICE.

MICHAEL HEISSER, OF CHICAGO, ILLINOIS.

STORAGE-BATTERY GRID- SPEGIFICATION forming part of Letters Patent No.794,501, dated July 11, 1905.

Application filed July 5, 1904. Serial No. 215,337.

To aZZ whom it may concern:

Beit known that I, MICHAEL HEISSER, a citizen of the United States,residing at Chicago,

in the county of Cook and State of Illinois, have invented certain newandusefulImprovements in Storage-Battery Grids; and Ido herebydeclarethe following to be a full, clear, and exact description of theinvention, such as will .enable others skilled in the art to which itappertains to make and use the same.

This invention relates to a novel construction in a storage-batterygrid, the object being to provide a grid in which the lead oxid issecurely held and the supporting-bars are so formed as to prevent thesame from being oxidized, and thus eaten away to an extent to cause thelead oxid to be released, and, further, to provide a grid which can beeasily cast and in which the current is led with the least resistance tothe pole; and it consists in the features of construction hereinafterfully described and claimed.

In the accompanying drawings, illustrating my invention, Figure l is aside elevation of a storage-battery grid constructed in accordance withmy invention. Fig. 2 is a detail vertical transverse section, on anenlarged scale, on the line 2 2 of Fig. 1.

My said grid consists of an outer frame A, of lead, of ordinaryconstruction, having the pole B, and which is traversed by a pluralityof parallel bars 0, which are 2 shaped in cross-section, the said barsforming substantially V-shaped grooves D, in which the lead oxid E isheld. The said bars C are so made that the flanges of same terminate insharp points and are wedge-shaped, so as to resist attack by the liquidin the battery, it being well known that such liquid readily attacks thelead at the sharp corners presented thereby, but is slow toeat its waythrough a greater thickness of the metal. The outer walls of theflangesof said bars G lie in parallel planes, so that the finished gridis perfectly smooth on both sides when completed and the lead oxid hasbeen introduced. The said bars C are made as light and thin as possible,and consequently will not bear great strains very readily. To this endsaid bars require to be reinforced between their ends,

and this I accomplish by casting integral with said bars inclined crossbars or braces F, the latter being regularly spaced and extendingsubstantially diagonally through the grid. The longest of saidcross-bars F extend from the base of the pole B to the farthest cornerof the grid, so that the current is led as directly as possible from theremotest portions of the grid to said pole, thereby reducing theresistance to a minimum.

My said grid isvery advantageous by reason of the fact that it serves tofirmly retain the lead oxid and presents a minimum of. corners for theattack of the liquids in the battery, besides being very easy to cast,as it requires only a very simple mold.

I claim as my invention 1. A storage-battery grid comprising a frameprovided with a plurality of parallel cross-bars, said cross-bars beingZ-shaped in cross-section and so disposed that the webs of the said barsextend at an incline from one side to the other of said frame and theouter faces of the flanges of all of said bars lie in two substantiallyparallel planes, said bars providing substantially V-Shaped grooves intheir upper and lower faces for retaining lead oxid, the flanges of saidbars being wedgeshaped and terminating in sharp edges.

2. A storage-battery grid comprising a frame provided with a pluralityof parallel cross-bars, said cross-bars being Z-shaped in cross-sectionand so disposed that the webs of the said bars extend at an incline fromone side to the other of said frame and the outer faces of the flangesofall of said bars lie in

